| Mangaturuturu River | |
| Name Etymology: | Maori meaning "leaky stream" |
| Nickname: | Sulphur River |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | Region |
| Subdivision Name2: | Manawatū-Whanganui |
| Subdivision Type3: | District |
| Subdivision Name3: | Ruapehu |
| Length: | 29km (18miles) |
| Source1: | Mangaturuturu Glacier |
| Source1 Location: | Mount Ruapehu |
| Source1 Elevation: | 2200m (7,200feet) |
| Mouth: | Manganui o te Ao River |
| Mouth Coordinates: | -39.3222°N 175.27°W |
| Mouth Elevation: | 490m (1,610feet) |
| Progression: | Mangaturuturu River → Manganui o te Ao River → Whanganui River |
| River System: | Whanganui River |
The Mangaturuturu River is a river at the centre of New Zealand's North Island. One of the headwaters of the Manganui o te Ao River, it flows west from the slopes of Mount Ruapehu, joining with numerous other small rivers to become the Manganui o Te Ao 20km (10miles) northwest of Ohakune. It has also been known as Sulphur River, or Sulphur Creek. In April 1975 a lahar raised the river to 2.1m (06.9feet) above its flood level.[1] There were also lahars in 1969 and September 1995. Earlier lahars were around 8,500 and 10,500 years ago.[2]